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Measurement Specifications 34 Installation and Specifications
357
M3014A Mainstream and Sidestream CO
2
Humidity Correction Factor
Either BTPS or STPD can be selected as the humidity correction factor for the Mainstream CO
2
readings. The formula for the correction calculation is:
M3014A Mainstream CO
2
Performance Specifications
CO
2
Range 0 to 150 mmHg (0 to 20.0 kPa)
Accuracy
after 2 minutes warmup:
For values between 0 and 40 mmHg:±2.0 mmHg (±0.29 kPa)
For values from 41 to 70 mmHg: ±5% of reading
For values from 71 to 100 mmHg: ±8% of reading
The specifications are valid for standard gas mixtures, balance air, fully
hydrated at 35°C, P
abs
= 760 mmHg, flow rate = 2 l/min.
Resolution
Numeric: 1.0 mmHg (0.1 kPa)
Wave: 0.1 mmHg (0.01 kPa)
Stability:
Short term drift
Long term drift
±0.8 mmHg over four hours
Accuracy specification will be maintained over a 120 hour period
awRR Range 2 to 150 rpm
Accuracy
±1 rpm
Warm-up Time 2 minutes with CO
2
transducer attached for full accuracy specification
Response Time Less than 60 ms (with adult or infant reusable or disposable adapter)
M3014A Sidestream CO
2
Performance Specifications
CO
2
Range 0 to 150 mmHg (0 to 20.0 kPa)
Accuracy after 2 minutes warmup:
For values between 0 and 40 mmHg:±2.0 mmHg (±0.29 kPa)
For values from 41 to 70 mmHg: ±5% of reading
For values from 71 to 100 mmHg: ±8% of reading
For values from 101 to 150 mmHg: ±10% of reading
At respiration rates above 80 rpm, all ranges are ±12% of actual. The
specifications are valid for gas mixtures of CO
2
, balance N
2
, dry gas at
760 mmHg within specified operating temperature range.
Resolution Numeric: 1.0 mmHg (0.1 kPa)
Wave: 0.1 mmHg (0.01 kPa)
Stability:
Short term drift
Long term drift
±0.8 mmHg over four hours
Accuracy specification will be maintained over a 120 hour period
awRR Range 2 to 150 rpm
Accuracy ±1 rpm
Warm-up Time 2 minutes with CO
2
sensor attached for full accuracy specification
Sample Flow Rate 50±10 ml/minute
Total System Response Time 3 seconds
Operating Temperature 0 to 40 °C (32 to 100 °F)
P
STPD
P
BTPS
=
P
abs
P
abs
P
H2O
–
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⋅